Mine spent over an hour ride on its back, zero issues. Like mentioned, check for coins in electrical prior to power up.
They say not to lay soda machines/refrigerators down due to the oil from the compressor entering the lines and blowing it. Just wait 24hrs after standing them back up, no issues.
They say not to lay large vertical air compressors on their sides....they were right, lol....There was a lot of oil to clean up that day lol... Didn't hurt anything tho..